Coal-mining machine



14, 1930. N; D. LEVlN I 1,778,296

COAL MINING MACHINE Original Filed Dec. 2, 1924 s Sheets-Sheet 1 Oct. 14, 1930.

no. LEVIN COAL MINING MACHINE Original Filed Dec. 2 192 3 Sheets-Sheet 2 Oct. 14, 1930. N. D. LEVIN 1,773,296

COAL MINING MACHINE Original Filed Dec. 2, 1924 5 Sheets-Sheet 3 49,7 [Fly-6 55 5/ {r A v 4 49 Patented Oct. 14, 1930 UNITED STATES PATENT OFFICE NILS D. LEVIN, F COLUMBUS, OHIO, ASSIGNOR TO THE JEFFREY MANUFACTURING 1 COMPANY, OF COLUMBUS, OHIO, A. CORPORATION OF OHIO VOCAL-MINING MACHINE Application filed December 2, 1924, Serial no. 753,495. Renewed July 26, 1930.

' The present invention relates to certain new and useful improvements in coal mining machines, of the class whereby the coal is first undercut and, after the material above the undercut has been blasted down, is gathered from the floor of the mine and loaded into suitably positioned receptacles for trans portation from the mine.

I am aware that machineshave heretofore been proposed having conveyors adapted to receive material at the mine floor, and provided with mechanism adapted to form a kerf at the base of the vein, and after the material above said kerf'has been broken down, to gather the disrupted and dislodged material from the mine floor and move it onto said conveyor. Machines such as above described, with which I am familiar, possess certain inherent defects which itis the object of this invention to overcome.

The especial object ofthis invention is to provide, in a machine of the class described,

auxiliary gathering devices adapted to cooperate with the undercutting mechanism, after the coal has been shattered by the detonation of a suitably disposed explosive, to dislodge the disrupted coal and move it onto the conveyor.

A further object is to provide mechanism such as aforesaid, which may be conveniently shifted fromits operative position adjacent the undercutting mechanism to an idle position remote therefrom to thereby avoid obstruction of the movement of the machine during the undercutting operation.

The means whereby I attain these objects are fully set forth in the following specification reference being had to the accompanying drawings of which I Fig. 1 is a diagrammatic sectional view of a chamber in a coal mine including a general plan view of a machine embodying my present invention, arrangedto undercut. the coal preparatory to blasting it down.

Fig. 2 is a view similar to Fig. 1 illustrating the same machine arranged to gather the disrupted and dislodged coal from the mine floor and load it into a car suitably disposed upon the mine track in the rear of the machine.

Fig. 3 is a side elevation of the devices illustrated in Fig. 2.

Fig. 4 is a fragmentary plan view, on an enlarged scale, of the cutting and gathering devices shown as arranged in Fig. 2.

Fig. 5 is a side elevation of the devices illustrated in Fig. 4.

Fig. 6 is a fragmentary sectional view taken along the lines VIVI of Fig. 4.

Fig. 7 is a fragmentary sectional view taken along the lines VII-VII of Fig. 4.

Fig. 8 is a transverse sectional view of the cutting and gathering devices taken along the line VIIIVIII of Fig. 4.

Fig. 9 is a fragmentary sectional view taken along the line IXIX of Fig. 1.

Like numerals refer to similar parts in the several figures.

In Figs. 1, 2, and 3 of the drawings I have shown a coal mining machine such as is disclosed in my copending application Ser. No. 697,790, filed March 8, 1924, to which has been added dislodging and gathering mechanism which embodies all of the features of this invention. It is to be understood that they are but illustrative and not restrictive, and that they may be subjectto wide variation as to details without departure from the spirit of my invention.

As shown in the drawings, the machine comprises a main supporting frame 1 which is adapted to rest upon and slide in any direction over the mine floor. Mounted upon the main frame 1 is a conveyor having a forward horizontal section 2 adapted to receive material at the mine floor, an inclined elevating section 3, and a horizontal delivery section 4. A similar conveyor 5 pivotally mounted upon the rear end of the supporting frame for swinging movement about a vertical axis, receives material from the conveyor section 3 and delivers it to suitably positioned receptacles in the rear of the machine such as the car 6, for transportation from the mine. A suitable motor 7 mounted upon the main frame 1 is connected by suitable gearing, not shown in the drawings, with the several elements of the machine to actuate them.

Projecting from the forward end of the main frame 1, is a substantially horizontal elongated frame 8 along the lateral edges of which are formed guideways wherein travels an endless chain 9 f the well known type having sockets formed upon its links wherein are fixed renewable cutter bitslO: adapted to engage'the coal to cut it. Feeding mechanism is provided which comprises the feed ropes 1-1 and 12 adaptedto be attached to suit-ably positioned abutments external ofthemachine, such as the anchor jacks 13' and 14,

and whichare windable upon suitable wind- I ing drums mounted'upon the machine frame.

2' Thesewindingdrums are provided with controlling devices whereby the winding and unwinding of the ropesimay be controlled for moving and'guiding the machine 1n any pre ferred direction .over the mine floor- As all 1.,j.is a vertical shaft 1? to which is fixed a bevel gear 18. The gear 18 engages' a suitable bevel pinion 1 9 fixed to the forward end of a longitudinally extending power shaft 20 which is connected by suitable: gearing not shown in the drawings, with the motor '7'. A sprocket wheel 2l'fixed. to the lower end of the vertical'shaft' 20 engages the=cutter chain S," toactuate it. The trough of the conveyor bits 10 will drag thecoal cuttings, and any other loose fmaterial coming ,within their "path, onto the plate 22and' within the path of the conveyor flights! 23. to be conveyed -thereby rearwardly ofthe machine.

plated the coal is dislodged and. removed in successiveincrements, producing a step by.

section: 2terminates'forwardly ina flat plate 22 positioned in contact with the mine floor and extending beneath the sprocket wheels 21. When the cutter chain 9-is actuated the cut er In the method of mining'here contemstep advance of'theworkingface; The cycles of operation consist of first fo-rming akerf, preferably, and as hereshown at the base, of

the vein, then disrupting the coal above the kerf by any suitable means, such as by blast- .ing, and afterwards gathering the dislodged @5 5 V 1 ferring 1t to'suitably positioned receptacles coal from the floor of the mine andtransfor transportation from the mine. a V

Preparatory to the formation of the underkerifl themachine above described is positioneduponthe mine floor at one side of the mine chamber, as here shown the right hand side, since thecutter chain has, in the-present showingja direction oftravel which necessitates working *fromthe right to the left. i "It will be understood,of course, that with the kerf forming mechanism traveling in an opposite direction, movement would be from left to right. The forward end of the cutter bar 8 projectseinto the angle formed by the face 24 with'the rib 25. The feed rope 11 is drawn out from its winding drum, passed around the guide sheaves26 and 27 at the forward end of the main frame, and attached to a suitable anchor jack 13 positioned at the left hand side of the mine chamber adjacent the workingface 24.- Fhefeed rope 12 is then drawnout from its winding drum, passed around the guide sheaves 28 at the rearward end of the main frame, ,and attached to a suitable anchor jack 14 positioned adjacent the right hand rib 25 in advance of the guide sheave 28. ll hen the cutter chain is actuated and themechanism which controls the winding drums is suitably manipulated the I feed rope 11 will be held. against-unwinding,

and. the, feed rope 12 will be wound upon its drum, moving the machine bodily longitudinally forward, swinging on the feed ropell about the anchor. jack 13 to cause-the cutter arm 8 tov be thrustlongitudinally intothe coal to form the sumpi-ng or entering cut. After the cutter arm 8 has entered the coal to a sufficient depth the feed mechanism upon the machine will be again manipulated to cause the winding of the feed rope 11 to draw the 7 machine bodily laterallyrcausing thecutter arm 8 to cut a kerf across the face-of the chamber, the feed rope 12 meanwhile being; permitted to unwind under frictionally con-.

trolled resistance to maintain thedesired angular. relation between the longitudinal lines of the; cutter" arm and. the working face. When the cutter arm-8 has advanced to the lineof the left hand rib 29 the anchor jacks l3 and li will be repositioned so that tension .upon'the ropes l1 and 12 will withdraw the machine from the coal in the manner which is well understood by those skilled ,inthe use of shortwall mining machines. 1 V

- Holesmay then be drilled in the the .underkerf, and'these holes loaded with suitable: explosives by the detonation of whichijthe coal is broken down. WVhen insufficiently shattered by the, blast the fragments of coal remain so interlockedthat the cutterv chain forms a new kerf beneath the mass of partly broken coal without dragging the-overhanging fragments onto the conveyor. The excessive use ofexplosives, how- 'ever,-'so shatters the coal as to materially resirable whichcannot always beattained in practice. To. facilitate dislodging'and gathering the broken coal without excessive blasting 1 have providedtheauxiliary dislodging and. gathering devices hereinafter described which are adapted to "cooperate with the cut.-

ting devices during the-loading operation.

'Pivota'lly mounted upon the main frame '1 for rotation about the axis of thevertical coal above 1 duceits, value, and ahappy medium is dea shaft 17, is a yolre to which is fixed a horizontally'projecting elongated frame 31 havin guideways along its lateral edges wherein travels a cutter chain 32 similar to the chain The frame 31 is'bent laterally at 33, as shown in Fig. 4 of the drawings, for a purpose which will hereinafter be more fully explained. The cutter chain 32 engages a sprocket wheel 34 mounted for free rotation upon the vertical shaft 17, and a clutch member 35 having clutch teeth 36 adapted to engage suitable apertures in the hub 37 of the sprocket wheel 34, splined to the shaft 17 and is'adapted to operatively connect the sprocket wheel 34 with the shaft 17. A shifting lever 38 pivoted. 39 upon the yolze 30 is adapted to move the clutch member 35 into and out of engagement with the sprocket wheel and means is provided. for locking the shift lever 38 in either of its positions by a cotter pin 40 adapted to be thrust through a suitable aperture in an upstanding flange 41 of the yo e 30. I 7

At the outer end of the guide frame 31 is formed a downwardly projecting journal bearing 42 in which is rotatably mounted a vertical shaft 43. To the upper end of the shaft 43 is fixed a sprocket wheel 44 which engages and is actuated by the cutter chain 32. To the lower end of the shaft 43 is fixed similar sprocket wheel 45 which engages and actuates an endless cutter chain 46 similar to the chains 9 and 32. The chain 46 is supported in guideways formed along the lateral edges of an auxiliary guide frame 47 which is rigidly attached to the under side of the guide frame 31 in any suitable manner, as by brackets 47.

. ring the loading operation the auxiliary guide frames 31 and-47 occupy a position extending forwardly from the main frame substantial y parallel with and directly above the cutter frame 8 to which they are rigidly attached by removable coupling bar 48. he coupling bar 48 is formed of a steel bar of suitable cross section at apt-ed to project between pair of downwardly extending "ianges 49 attached to the guide frame 47, and

l. to be locked in that position by a coupling pin 50 thrustthrough suitable apertures in the 49 and coupling bar 48. To the lower end of the coupling bar 48 is attached a downwardly projecting stud 51 having a cross-head 52 adapted to be thrust through a suitably formed aperture in the top plate 53 the cutter frame 8, and to be turned crossways thereof so as to engage the underside of said plate and lock the bar 48 securely thereto. lVhen the parts a thus arranged the three cutter chains 9, 32, and 46 may be simultaneously brought into effective contact with the mass of dislodged coal to tear out the interlocked fragments and move them towards and onto the plates 22 of the conveyor.

It is apparent that the gathering devices above described, if left in their operative position during the under cutting operation, would tend to cut additional kerfs extending over substantially the entire height of the vein, thereby producing excessive amounts of slack and entirely destroying the commercial value of the coal. These auxiliary devices are, therefore, adapted to be removed to a position remote from the coal face when not required for the specific service for which they are designed. After all of the dislodged coal has been loaded out, and preoaratory to the next step in the advance of the coal face the clutch 35 will be disengaged from the sprocket wheel 34 to allow the chains 32 and 46 to remain idle, after which the guide bars 31 and 47 will be moved to their inoperative position. The coupling pin 50 will be withdrawn to release the upper end of the coupling bar 48 from the flanges 49 of the guide frame 47, the bar 48 rotated about the stud 51 to release the cross head 52 pivotal support into the position illustrated in F g. 1 the drawings, where by virtue of the bond 33 in the frame 30 they lie closely t and substantially parallel to the sit e of the nachine where they will not imits freedom of movement during the co. operation. A bar 56 projecting from the main frame 1 near the vertical shaft 17 as illustrated in Figs. 1 and 9, is adapted to engage the shifting l ver 38 when the auxiliary frame 31 is in its idle position, to insure the disengagement of the clutch member 35, prevent any accidental clutch engagement and preclude possible injury to the operator by accidental contact with the moving chain 32 during the undercutting operation.

A removable scraper apron 54 having attachment bars 55 adapted to extend into suitable apertures of the plate 53 of the cutter frame is provided along the rear of cutter frame 8 to engage fragments of coal falling in the rear of the cutter frame 8 and hold them in the path of the cutter chain 9 to insure their removal from the floor of the mine.

W hat I claim is:

1. In a coal mining machine, the combination with a main su porting frame adapted to rest upon and slide in any direction over the mine floor, means to move and guide said frame relative to the n'iaterial to be mined, a com .yor mounted upon said frame, an elongated cutter arm carried by said main frame projecting therefrom in fixed relation with said conveyor, a cutter chain carried by said cutter arm adapted to cut a path therefor in immovable masses of material and to move loose material onto said conveyor, an auxiliary cutter arm pivotally mounted upon said mainframe and adapted m it than fixed relation with the first men tioned cutter arm, and a cutter chain carried by said auxiliary cutter arm and adapted to I cooperate with the first mentioned cutter chain to dislodge disrupted material and move it ontosaid conveyor.- j

2; In a coal mining machine, the combination with a main supporting frame adapted,

to rest upon and slide in an y direction over the mine floor, means to move and guide said frame relative tothe'material to be mined, a conveyor mounted upon said frame, an elongated cutter arm carried byisaid main frame projecting therefrom in fixed relation with said conve or, a cutter chain carried by said cutter arm adapted to cut a path therefor in immovable masses of material and to move loose material onto said conve or a luralit V therewith relative to the material to be mined,

endless cutterchain adapted to travel in guideways of said cutter arm and to cut a path therefor in immovable masses of material and to move loose materialonto said conveyor, and an auxiliary cutter arm adapted to be'positioned adjacent the first mentioned cutter arm and held in fixed relation therewith or to he removed to a position remote therefrom, and an auxiliary cutter'chain carried by said auxiliary cutter arm adapted to cooperate with the first mentioned chain when positioned adjacent thereto to dislodge disrupted material and move it onto said conveyor. V a

4. In a coal mining machine, the combination with a main supporting frame adapted to rest upon and slide in any direction over the mine floor, means to move and guide said frame relative to the material to be mined, a conveyor mounted upon said frame, an elongated cutter arm carried'by said main frame 7 projecting therefrom in fixed relation with said conveyor, a cutter chain carried by said cutter arm adapted to cut a path therefor in immovable masses of material and to move loose material onto saidconveyor, an auxiliary cutter arm pivotally mounted upon said main frame above the first mentioned'cutter arm and adapted to swing about a vertical axis or to be held in fixed relation with the first mentioned cutter arm, and an auxiliary cutter chain carried by said auxiliary cutter arm adapted to cooperate with the first mentione'd cutter chain to dislodge disrupted material and move it onto said conveyor. I

5; Ina coal mining machine, the combina tion with a main supporting frame adapted to rest upon and slide in any direction over the mine floor, means to move and guide said frame relative to the material to be mined, a

conveyor mounted upon said frame, an elongated cutter arm carried by said main frame projecting therefrom in fixed relation with said conveyor, a cutter chain carried by said cutter arm adaptedto cut a path therefor in immovable masses of material and to move loose material onto said conveyor, an auxiliary cutter arm mounted upon said main frame and adapted to be held in fixed-relation adjacent the first mentioned cutter arm orto be moved to a position remote therefrom, and an auxiliary cutter chain carried by said auxiliary cutter arm adapted to cooperate with the first mentioned cutter chain when in position adjacent thereto to dislodge disrupted material and move it onto said conveyor. V V V 6. In a coalmmzng mach1ne, the comblnation'with a conveyor adapted to receive material adjacent the coal face and to transport it rearwardly of themachine, an elongated frame pivotally mounted adjacent the receiving end of said conveyor, an endless chain adapted to travel in guideways formed upon th lateral edges of said frame, material en gaging elements attached to said chain adapted to engage and dislodge disrupted material and move it towards said conveyor, a secondary guide-frame carried by thefirst mentioned guide frame, an endless chain adapted to travel in guideways formed on the lateral edges of said secondary guide frame and having material engaging elements adapted to cooperate with the first mentioned elements to dislodge disrupted material and move it towards said conveyor, and means actuated by the first mentioned chain to actuate the second mentioned chain as andfor the pur-' pose set forth.

7. In a coal mining machine, the combi-' nation with a conveyor adapted to receive material adjacent the coal face and transport it rearwardly of the machine, an elongated frame pivotally mounted adjacent the.

receiving end of-the conveyor, an endless chain adapted to travel in guidewa ys formed upon the lateral edges of said frame, material engaging elements attached to said chain adapted to engage and dislodge disrupted material and move it towards said conveyor, a secondary uide frame rigidly supported beneath said nrst mentioned guide frame, an endless chain adapted totravel in guideways form-ed along the lateral edges of said secondary guide frame and having material engaging elements adapted to cooperate with the first mentioned elements to dislodge disrupted material and move it towards said conveyor, and means actuated by the first mentioned chain to actuate the second mentioned chain as and for the purpose set forth. 8. In a coal mining machine, the combination with a conveyor adapted to receive material adjacent the coal face and to transport it rearwardly of the machine, an elongated frame pivotally mounted adjacent the receiving end of said conveyor, an endless chain adapted to travel in guideways formed upon the lateral edges of said frame, material engaging elements attached to said chain adapted to engage and dislodge disrupted material to move it towards said conveyor, a secondary guide frame attached to said first mentioned guide frame, an endless chain adapted to travel in guidewa-ys formed along the lateral edges of said secondary guide frame and having material engaging elements adapted to cooperate with the first mentioned elements to dislodge disrupted material and move it towards said conveyor,'a vertical shaft mounted adjacent the outer end of said guide frames and having sprocket wheels adapted to engage said endless chains to operatively connect them together.

9. In a coal mining machine, a supporting frame, and cutting mechanism carried thereby comprising an endless chain, cutter bits carried by said chain, an elongated relatively narrow guide frame having substantially parallel guideways formed in its lateral edges along which said chain is adapted to travel to cause said cutter bits to engage the material to be mined, said guide frame being pivotally mounted to swing about a vertical axis laterally remote from the extended longitudinal'central lines of-the effective part of said cutting mechanism.

10. In a coal mining machine, the combition with an elongated main supporting frame, of an elongated guide frame pivotally mounted at the forward end thereof and adapted to swing about a vertical axis positioned within said supporting frame from an active position projecting forwardly thereof to an idle position extending rear wardly of said pivotal support, said guide frame being bent laterally acent its pivotal support to cause its idle position to lie outside of said supporting frame parallel to the longitudinal lines thereof, and an endlast cutter chain adapted to travel in guideways of said guide frame. I

11.111 a coal mining machine, the combination with a main supporting frame, of an elongated guide frame pivotally mounted upon said main frame and adapted to swing about a vt-i cal axis in the central longitudinal vertical plane of said main frame from an active position projecting for ardly thereof to an idle position extending rearwardly of said axis, said guide frame being bent laterally adjacent its pivotal support to cause its idle position to lie outside of but parallel with said main frame.

12. In a coal mining machine, the combination with an elongated main supporting frame, an endless cutter chain adapted to travel inhorizontal planes to engage the material. to be mined, and an elongated guide frame for said chain pivotally supported for swinging movement about a vertical axis in the longitudinal central vertical plane of said supporting frame, and bent laterally adjacent its pivotal support to cause the effective part of said chain to travel along lines parallel with but laterally remote from said central vertical plane.

13. In a coal mining machine, the combination with an elongated main supporting frame, of an endless cutter chain adapted to travel along straight lines to engage the material to be mined, and an elongated guide frame for said chain pivotally supported for swinging movement about a vertical axis in the longitudinal central vertical planes of said supporting frame and bent laterally adjacent its pivotal support to cause the effective part of said chain to travel along straight lines parallel with but laterally remote from said central vertical plane.

14. In a coal mining machine, the combination with an elongated main supporting frame adapted to be moved relative to the material to be mined, an elongated kerf cutter rigidly attached to and projecting in longitudinal alignment with said main frame and adapted to form a kerf at the base of the vein, a supplemental elongated cutting mechanism pivotally mounted upon the main frame for swinging movement about a vertical axis in the central longitudinal vertical plane thereof and so shaped that its effective part may project forwardly of said main frame along lines parallel with but laterally removed from said cen tral vertical plane at one side thereof or may project rearwardly of its pivotal sup port along lines parallel with but laterally removed from said longitudinal central plane at the other side thereof.

15. In a coal mining machine, the combination with an elongated main supporting frame adapted to be moved relative to the material to be mined, an elongated kerf cutter rigidly attached to and projecting in longitudinal alignment with said main frame and adapted to form a kerf at the base of the vein, a supplemental elongated cutting mechanism pivotally mounted upon the main frame for swinging movement about a vertical axis in the central longitudinal vertical plane thereof and adapted to project forwardly of said main frame along lines parallel with but laterally removed from said central vertical plane at one side there of or to project rearwardly of its pivotal support along lines parallel, with. but laterally removedfrom said central vertical plane at the other side'thereof.

. 16. In a machine of the class described, the combination 'of conveying" mechanism, cutting mechanism to form a single'kerf in a coal face and adapted also to gather-loose material and deliver it to saidconveying mechanism, and gathering mechanism adacent said cuttmg mechanism and movable relative thereto into position to cooperate therewith in a plane spaced therefrom to en'- gage and deliver loosematerial to said conveying mechanism.

17. In a machine of the]classydescribed,

the combination of conveying mechanism, cutting mechanism projecting forwardly'of said conveying mechanism to form a kerf in a coal face at the mine floor and adapted also to gather loose material and deliver it to said conveying mechanism, and 'gathering mechanism above said' cutting mecha nism and cooperable" therewith to engage I 19; In a machine of the class described, the combination of conveying "mechanism, cutting mechanism projecting forwardly from said conveying mechanism and in fixed relation thereto to form' a kerf in a coal face and adapted also to gather loose material' and deliver it to said conveying mechanism, and gathering mechanism adjacent said cut ting mechanism and movable into cooperating positionftherewith to engage and deliver loose material to said conveying mechanism.

20. In a machine of the class "described, the combination" of conveying mechanism,

; cutting mechanism projecting" forwardly from said conveying mechanism and in fixed relation thereto to form a single kerf in a coal faceand adapted also to gather loose material and deliver "it to said conveying mechanism, andf'a plurality of gathering mechanisms lying in different planes relative to said cutting mechanism and movable into position to cooperate therewith'to engage and deliver loose material to said conveying mechanism.

21. In 'a machine of'the class described,

the combination of conveying mechanism, cutting mechanism projecting forwardly from sald conveymg mechanism and in'fiXed relation thereto to form a single kerf'in a coal face and adapted also to gather loose material and deliver it to said conveying mechanism, and a" plurality of gathering mechanisms lying in difierent planes above said cutting mechanism and movable into position to cooperate therewith to engage and deliver loose material to said conveying mechanism." i v V 22. In a machine of the c'lassdescribed, the combination of conveying mechanism, cutting mechanism. projecting forwardly from said conveying mechanism and in fixed relation thereto to form a kerf in a coal face and adapted" also to gather loose material and deliver-it to said conveying mechanism, and a plurality of gathering mechanisms adjacent said cutting mechanism and movable adapted also to gather loose material and deliver it to said conveying mechanism, and a plurality of pivotally mounted gathering mechanisms adj acent'said cutting mechanism and movable into cooperating position therewith to engageand deliver loose material to saidconveying mechanism. i

r 24. In a machine of the class described,

the combination of conveying mechanism, cuttingmechanism to form a l zerf in a coal face adapted 'to gather loose material and deliver it to "said conveying mechanism, gathering mechanism adjacent-said cutting mechanism andcooperatingtherewith to en:

gage and deliver loose material to said conveying mechanism, said gathering mechanism being movable from an active position adjacent said cutting mechanism to an lnactive 7 position in rear of sai'd cutting mechanism,

means for locking said gathering mechanism in active position, and means for locking said gatherlngmechanism in inactive position.

25. In .a machine of; the class described,

the combination of conveying mechanism,

cutting mechanism to form a lien in a coal face adapted to gather loosen'iaterialf and. deliver it'tosaid conveying mechanisim nivotally mounted gathering mechan'ism-adjacent said cutting mechanism and cooperatin therewith'to engage; andldeliver loose ma ;terial to said conveying mechanism, said gathering mechanism beingmovable from an active position adjacent said cutting mecha-- nism to an inactive position in rear of said cutting mechanism,-means for locking said gathering'mechanism in active position, and means for locking said gathering mechanism in inactive'posit'ion, 26.TIn;a machine of the class described, the

combination of conveying mechanism, cutting mechanism to form a kerf in a coal face adapted to ga her loose material and deliver it to said conveying mechanism. a plurality oi pivotally mounted gathering mechanism lying in different planes above said cutting mechanism and cooperating therewith to engage and deliver loose material to said conveyingmechanism, said gathering mechanism being; movable from an active position adjacent said cutting mechanism to an inactive position in rear of said cutting mechanism, means for locking said gathering mechanism in active position, and means for locking said gathering mechanism in inactive position.

27. In a machine of the class described, the combination of conveying mechanism, cutting mechanism to form a kerf in a coal face and adapted to gather loose material and deliver it to said conveying mechanism, gathering; mechanism cooperating with said cutting mechanism to engage and deliver loose material to said conveying mechanism, said gathering mechanism be ng' movable irom an active position adjacent said cutting mechanism to an inactive position in rear thereof, means to lock said gathering mechanism in active position. means to locisaid gathering mechanism in inactive position, and means automatically to prevent unloclc ing of said gathering mechanism when in inactive position.

28. In machine of the class described, the

; combination of conveying mechanism, cutting" mechanism to form a kerf in a coal face and adapted to gather loose material and deliver it to aid conveying mechanism. gathermech anism cooperating with. said cutting mechanism. to engage and deliver loose mate rial to said conveying mechanism, said. cring' mechanism being movable from an active position adjacent said cutting mechanism to an inactive position in rear thereof, means to lock said gathering mechanism in active position, means to lock said gathering mechanism in inactive position, and means engag ing said last named locking means upon movement of said gathering devices to inactive position automatically to prevent unlocking of said gathering means when in inactive position.

29. In a machine of the class described, the combination of conveying mechanism, cut ting mechanism to form a kerf in a coal face and adapted also to gather loose material and deliver it to said conveying mechanism, a plurality of ,gatherers lying; in planes above the plane of said cutting mechanism, said gatherers being movable from an active position of said cutting mechanism to inactive positions in the rear thereof, means for driving said on ting mechanism and gatherers, means for intermitting the drive of said gather-ere, and means automatically to lock the gatherer driving mechanism when said gatherers are in inactive position.

30. In a machine of the class described, the combination of conveying mechanism, cutting mechanism to form a keri in a coal face and adapted also to gather loose material and deliver it to said conveying mechanism, a plu rality of gathcrers lying in planes above the plane of said cutting mechanism, said gathcrers being movable from active position of said cuttingmechanism to inactive positions in the rear thereof, a common driving means for driving said cutting mechanism and gatherers, means for intermitting the drive of said gatherers, and means automati- -ally to lock the gatlierer d riving' mechanism when said gatherers are in inactive position.

31. In a machine of the class described, the combination of conveying; mechanism, cutting mechanism to form akert in a coal face and adai d also to gather loose material and de iver it to id conveying mechanism, gathering mccha. ism adjacent said cutting mech anism and cooperating therewith to engage and deliver loose material to said conveying: mechanism, gathering mechanism being movable l IOiM an active'position relative to said cuttingmechanism to an inactive position in rear thereof, a common drive shaft for said cutting mechanism and said gatheriug mechanism, means for connecting and disconnecting said shaft, and means to prevent operation of said shaft and coupling mechanism when said gathering mechanism is in inactive posit-ion,

In a machine of the class described, the combination of conveying; mechanism, cuttino mechanism to "form a keri in a coal face and adapted also to gather loose materiai and deliver it to said con veyin g i chanis-im, gathering mechanism adjacent sa cutting nicchanism and cooperating therewith to engage and deliver loose material to said conve ing mechanis, said gathering mechanism being:' movable from an active position relative to said cutting mechanism to an inactive position in rear thereof, a'common drive shaft for said cutting mechanism and said gathering mechanism, means for connecting; and disconnecting said gathering mechanwn from said shaft, and means automatically to render said shaft coupling mechanism unopcrable when said gathering i'nechanism has moved to its inactive position.

33. In a machine of the class escribed, the combination of conveying mechanism, cutting mechanism to form a keri in a coal face and adapted also to gather loose material and deliver it to said conveying); mechanism, a driving shaft for said cutting mechanism. gathering mechanism pivotally mounted or said shaft and oiiset laterally therefrom, said gathering mechanism being novable from an active position adjacent said cutting mechanism to an inactive position in rear thereof above said conveying mechanism and substantially within the boundaries of said conveymecha-nism, means for coupling said gathering mechanism to said shaft for driving, and means automatically to. prevent driving connection between said gathering mechanism and said shaft when said gathering mechanism is in inactive p sition.

r 34;. In a machine of the class described, the combination ofv conveying mechanism, cutting mechanism to form a lterf in a coal face and adapted also to gather loose materal and deliver it to said conveying mechanism, gathering mechanism adjacent saidcutting mechanism and cooperating therewith to engage and deliver loose mate-rial to said conveying mechanism, and means at one side of and directly behind said cutting and gathering mechanisms to prevent the escapeof loose material. 1 I

v3'5. In a machine of the class described, the combination of conveying mechanism, cutting mechanism to form a'kerf in a coal face.

"and adapted also to gatherloose material and deliver it to said conveying mechanisnngatn ering mechanism adjacent said cutting mechanism and cooperating therewith 'to engage and deliver loose material to said conveying m'echamsm, and removable means at one side of and directly behind said cutting and gathering mechanisms to prevent the escape of V loose material.

36. In amachine of the class described, the

combination of conveying mechanism, cutting mechanism to form a kerf in a coal face ering mechanism adjacent said cutting mechanism and cooperating therewith to engage and deliver loose material'to said conveying mechanism, and a substantially vertically disposed apron at one side of and directly behind said cutting and gathering mechanisms to prevent the escape of loose material.

I 37 In a machine of the class described, the combination of conveying mechanism, cutting mechanism to form a kerf in'a coal face and adapted also to gather loose material and deliver it to said conveying mechanism, gatherin'g mechanism adjacent said cutting mechansm and cooperating therewith to engage and deliver loose material to said conveying mechanism, and an apron having substantially vertical and horizontal walls at one side of said cutting and gathering mechanism to prevent the escape of loose material.

38. In a machine of the class described, the combination of'conveying mechanism, a plurality of gathering mechanisms lying in different horizontal planes adapted to gather loose material and deliver it to said conveying mechanisms, means for driving said gathering mechanisms, and means for coupling one or more of said gathering mechanisms and said driving means;

39. .In a machine of the class described, the combination of conveying mechanisms,a plurality of gathering mechanisms, one at least of which is fixed relative to said conveying mechanism, and one at least of which is movable from an active to an inactive position relative to said fixed gathei'er and said conveying mechanism and in a plane spaced from that of said fixed gatherer, common driving means for said gatherers, and means for coupling and uncoupling said movable gatherers'with respect to said common driving means 7 40; In a machine of the class d scribed, the combination of'conveying mechanisms, a plurality of gathering mechanisms, one at least of which is fixed relativeto SZtlClCOHVQylIIg mechanism, and one at least of which is movable from an active to an. inactive position relative to said fixed gatherer and said conveying mechanism and'in a planespaced from that of said fixed gatherer, common driving means for said gatlierers, means for coupling and uncoupling said movable gatherers with respect to said common driving means, and means to prevent operationofthe' driving connection between I said 'movable gatherers and said driving means.

41. In a machine of the class described, the combination of conveying mechanisms, a plurality of gathering mechanisms, one at least of which is fixed relative to said conveying mechanism, and one at least of which is movable from an active to an inactiveposition relative to said fixed gatherer and said conveying 'mecha'nism, common driving means for said gatherers, means for coupling and uncoupling said movable gatherers with re spect to said common driving means, and means automatically to prevent operation of the driving connection between said movable gatherers and said driving means when said movable gatherers are moved to inactive position. a

42. In a machine of the class described, the combination of conveying mechanism comprising a-conveyor pan having an open receiving end adapted to lie upon amine floor 1 and 'IGCBlVG loose material therefrom, cutting mechanism extending forwardly of said pan and lying in substantially the planeof the conveyor adapted to form a kerf in the coal face and also to gather loose material and deliver it to said conveyor, and gathering mechanism extending. forward from said conveyor mechanism and lying in a plane above said cutting mechanism to gather loose material and deliver it to said conveying mechanism, said gathering mechanism being movable from an active position adjacent the cutting mechanism to an inactive position in rear of said cutting mechanismand in a plane above said conveying mechanism.

43. In a machine of the class described, the combination of conveying mechanism comforward "f'romsaid conveyor mechanism and lying in planes above'said cutting mechanism to gather'loosematerialand deliver it to said conveying mechanism, said gathering mechainisms being movable from active [positions .1 adjacent the cutting mechanism't'o inactive positionsin rear-of'said cutting mechanism,

and in a plane above said'conveying m'echanism.

' it-Ina machine of-the class described, the

'-- combinationof conveying mechanism comprising a'conveyor-pan having an open receiving end adapted'to lie upon a mine floor andreceive loose'material therefrom, cutting mechanismextending forwardly of said pan and lyingin substantially the plane of the conveyor adapted to form akerf'in the coal fface andalso to gather loose material and deliver it to 'saidconveyor, and a plurality of gathering mechanisms extending forward from said conveyor mechanism and lying in planes above said cutting mechanism to gather loose material and deliver it to said coupling mechanism, said gathering mechanisms being connected and movable together '2 from active positions'adj-acent cutting mechaynism.

45, In-amachine offthe class'described, the combination of conveying mechanlsm comprising a conveyor pan having an open re- 40 ceiving end adapted to he upon a mine floor andi-recive "loosematerial therefrom, cutting mechanism extending forwardly of said pan and'lying in substa'ntially'the plane, of

"the conveyor adapted to form a kerf in the 14 coal face and also to gather loose material and deliver it to said conveyor, gathering mechanism extendlng forward from said conveyor mechanism and lylng n a plane above saidc'utting mechanism to gather loose material and deliver it to said conveying mecha- -111S111, 21, second gathering mechanism'carried by said first'named gathering mechanism to {gather loose material and deliver it to said conveying mechanism, said gathering mecha- -5 *nisms being movable from activepositions adjacent the cutting'mechanism to inactive positions'in rear of said cutting mechanism and in a plane-above said conveying mechamsm. w O 46, In a machine of the class described, the

combination of conveying mechanism comprising aconveyor pan having an open receiving end adapted to lie upon a mine floor 'a'ndreceive loose material therefrom, cutting mechanism extendingf0rward1y of -said pan and lying in substantially the plane of the conveyor adapted to form a kerf in the coal face and also to gather loose material and deliver it to said conveyor, gathering mechanism extending forward from said conveyor mechanism and lying in a. plane above said cutting mechanism to gather loose material and deliver it to said conveying mechanism, a second gathering mechanism suspended from said first named gathering mechanism to gather loose material and deliver it to said conveying mechanism, said gathering mechanisms being movable from active positions adjacent the cutting mechanism to inactive positions in rear of said cutting mechanism and in a plane above said conveying mechanism.

47. In a machine of the class described, the combination of conveying mechanism comprising a conveyor pan having an open receiving end adapted to lie upon a mine floor and receive loose material therefrom, cutting mechanism extending forwardly of said pan and lying in substantially the plane of the conveyor adapted to form a kerf in the coal face and also to gather loose material and deliver it to said conveyor, gathering mechanism extending forward from said conveyor mechanism and lying in a plane above said cutting mechanism to gather loose material and deliver it to said conveying mechanism, a second gathering mechanism suspended and ofiset from said first named gathering mechanism to'gather loose material and deliver it to said conveying mechanism, said gathering mechanisms being movable from active positions adjacent the cutting mechanism to inactive positions in rear of said cutting mechanism and in a plane above said conveying mechanism.

48; In a machine of the class described, the combination of conveying mechanism comprisinga conveyor pan having an open receiving end adapted to lie upon a mine floor and receive loose material therefrom, cutting mechanism extending forwardly of said pan and-lying in substantially the plane of the conveyor adapted to form a kerf in the coal faceand also to gather loose material and deliver it to said conveyor, gathering mechanism extending forward from said conveyor mechanism and lying in a plane above said cutting mechanism to gather loose material and deliver it to said conveying mechanism, a common driving shaft for said cutting mechanism and said gathering mechanism, means for coupling and uncoupling said gathering mechanism from said shaft, a sec- 0nd gathering mechanism lying between said cutting mechanism and said first named gathering mechanism, and driving connections between said first gathering mechanism and said second gathering mechanism.

49. In amachine of the class described,

"the "combination of conveying mechanism lot) comprising a conveyor pan having an open {receivinglend adapted to lie upon a mine v floor and receive loose material therefrom,

cutting .mecha'nism extending forwardly of said pan and lying in substantially the plane of the conveyor adapted to form a kerf in the coal face and also to gather loose material and deliver it to said conveyor, gathering mechanism extending forward from said conveyor mechanism and lying in aplane above and laterally offset from said cutting mechanism, means for driving said cutting and gathering mechanism, a second gathering mechanism interposed between said cutting mechanism and said first named gather ing mechanism, and laterally offset'therenism.

.50. In a machine of'the class described,

. the combination ofconveying' mechanism compr singa conveyor pan having an open receiving end" adapted to lie upon a mine floor and receive loose material therefrom, cutting mechanism extending forwardly of said pan and lying in substantially the plane of-the "conveyor. adapted to form a kerf in the coal face and also to gather. loosemate ia rial and deliver itto said conveyor, gather ing mechanism extending forward from said conveyor mechanism in a plane-abovesaid v cutting mechanism jto gather loose material deliver it to said conveying mechanism,

a second'gathering mechanism rigidly supported by said first named gathering mechanism in a plane between StllClfiISt gathering mechanism and said cutting mechanism,

meansfor driving said cutting mechanism and, said first gathering 'mechanism, and 7 driving connections between sa difirst gathering mechan sm and said second gathering a "mechanism, said gathering mechanisms heing movable from active positions ad acent {the cutting mechanism to an inactive position in reariof said cuttingmechanism andin planes above said conveying mechanism,

1.51.1111 a machine of the class describ-e'd, the combinat on of conveying mechanism icomprising a conveyor pan having an open receiving end adapted to lie upon a mine (floor and receive loose material therefrom, cutting mechanism ..extending forwardly. of said pan and lying in substantially the plane of thecoiiveyor adapted to form a kerfiin the coal face and also to, gather loose mateingmechanismextending forward from said conveyor mechanism inv a plane above said.

' cutting mechanismto jgatherziloose material and deliverit'tosaid conveying mechanism,

arsecondgathering mechanism rigidly supported by said firstnamed gathering mechanism in aplane'between said first gathering mechanism and said cutting mechanism, means for. driving said cutting mechanism and said first gathering mechanism, and

drivingconnections between'said first gathering mechanism and said second gathering mechanism, and means for locking the gathplanes above sa d conveying combination ofconveying mechanism comprising a conveyor pan having an open re ceivingend adapted tolie upon a mine floor and receive loose material therefrom, cutthe position in rear of said cutting mechanism, and :in mechanism.

. v i 52. In a machine of the class described, the

ting.niechanismextending forwardly of said a pan and lying in substantially the plane of the conveyor adapted to form'a kerf in the coal face and also to gather loose' material and deliver it to said conveyor, g athering mechanism extendingforward from said conveyor mechanism in plane above said cutting mechanism. to gather loose material and deliver it to said conveying mechanism, a

second gathering mechanism rigidly supported by said first named gathering mechanismin a plane between'jsaid first gathering mechanism I and 7 said cutting mechanism, means; for driving sa d cutting mechanism and said firstgatliering mechanism, and driving connections between said first gathering mechanism and saidsecond gathering mechanism, and removable nieans'to lock said gathering mechanisms tothe-cutting mechanism when in active position,said gathering mechnism and in planes-abovesaid conveying mech anism,

combination-of a conveying mechanism comprising a conveyor panhavingan open receiving endadapted to lie upon amine floor and receive loose material therefrom,cutting conveyor adapted to forma'kerf in the coal. ,face and also togather loose material and deliver it; to said conveyor, gathering mechs anismextend ng. forward from said conveyor mechanism. in, a plane. above said cutting 0nd gathering mechanism rigidly supported by said first named gathering mechanismoin a plane bQt-WGQILSELICI first gathering mech anism and said cutting mechanism, means for driving sa d cutting mechanism. and sald first gathering mechanism, and driving con- 3. In a machine of'the classdescribed,the

anisms being movable from active positions ad acent the cutting mechanism to an nacs tive positicn' nrear-ofsaid cutting; mechamechanism to' gather loose material and 'de- 7 7 I I a liver it to said conveying mechanism, a secrial and deliver it" to sa d conveyor, gathera mechanism extending forwardly of said pan and lying in substantially the plane of the conveyor adapted to form a kerf in the coal face and also to gather loose material and deliver itto said conveyor, gathering mech- V anism. extending forward from said conveyor mechanism in a plane above said conveying mechanism to gather loose material and deliver it to said conveying mechanism, a second gathering mechanism rigidly supported by said first named gathering mechanism in a plane between said first gathering mechanism and said cutting mechanism, means for driving said cutting mechanism and said first gathering mechanism, and driving connections between said first gathering mechanism and said second gathering mechanism, a transversely disposed locking bar removably mounted on said cutting mechanism to lock said cutting mechanism and said gathering V mechanisms in active'position, said gatheri'n'g mechanisms bein g movable from active positions adjacent the cutting mechanism to an inactive position in rear of said cutting mechanism, and in planes above said conveying mechanism.

55. In a machine of the class described, a frame, a gathering device'fixed thereto, a second gathering device movable relative to the first, and another gathering device carried by the second and movable therewith.

'56.: In a machine of the class described, a frame, a gathering device fixed thereto, a second gathering device movable relative to the first, and another gathering device suspended from the second and movable therewith.

5?. In a machine of the class described, a

*fra'me, a gatheringdevice fixed thereto, a second atherin device movable relative to the fir st,' a-nother gathering device carried by the second and movabletherewith, andmeans for drivinglsaid last two gathering devices in conjunction. V

58. Gatheringmechanismfor a machine of the class described comprising driving means, a movable gathering deviceactuated thereby,

a second gathering device rigidly, suspended from said first named gathering device and laterally olfset'therefrom, and a drive connection between said first named gathering device and said second gathering device.

59. Gathering mechanism for a machine of the class described comprising driving means, a pivotally mounted gathering device actuated thereby, a second gathering device rigidly suspended from said first named gathering device and laterally ofiset therefrom,

.and a drive connection between said first named gathering device and said second gathering device.

60. Gathering mechanism for a machine of the class described comprising a drive shaft, a gathering device pivoted on said shaft and driven thereby, and having its major portion laterally offset therefrom, a second gathering device carried by said first named gathering device, and a drive connection between said first named gathering device and said second device.

61. Gathering mechanism for a machine of the class described comprising a drive shaft, a gathering device having a laterally bent end pivoted to said shaft, a driving connection between said shaft and'said gathering device, a second gathering device carried bysaid first named gathering device, and a driving connection between the other end of said first named gathering device and said second gathering device.

62. In a machine of the class described, a frame, a gathering device fixed thereto, a second gathering device movable relative thereto, another gathering device suspended from the'second and movable therewith, and means for driving said last two gathering devices in conjunction. I

63. In a machine of theclass'described, the combination of conveying mechanism comprising a supporting pan, a vertical shaft mounted at the forward end of said pan,

means for driving said shaft, a cutting and gathering device rigidly mounted with respect to and driven by said shaft, a second cutting and gathering device pivotally mounted with respect to and driven by said shaft, and means for intermitting the driving action of said shaft on said second cutting and gathering device.

64. In a machine of the class described, the combination of conveying mechanism comprising a supporting pan, a vertical shaft mounted at the forward end of said pan, means for driving said shaft, a cutting and gathering device rigidly mounted withrespect to and driven by said shaft, a second cutting and gathering device pivotally mounted with respect to and driven by said shaft,means for intermitting the driving action of said shaft on said second cutting and gathering device, and means for locking said movable cutting and gathering device inactive and inactive positions 65. In a machine of the class described, the combination of conveying mechanism commovablegathering device is in itsinac- 66. coal mining machine, the combina- ;tion nfra oonveyer, .a n-'1ain .elongatedcutter projecting horizontally in fixedrelation to said convey-er, an endless cutter-chain on said arm adapted to cut a path therefor in'a face ,andto lmove locsematerial toward saide'onveyor when the, conveyor and cutter larmare. moved-Ito advance-the latter laterally, an auxiliary cutter arm, mo. able with tle main cutter arm an'dfin the same direction, said;,auxilianyjcutter; arm having a cutter chainadapftedto cooper-ate withithechain of thic main cutter arm in moving loose material toward the conveyor, lsaid" auxiliary cutter arm be ng inactive during the cutting movementjofesaid-main cutterarm, the direction of movement-- of said main cutter arm being jthe same, in, both the cutting and gathering ,cperationsand ineansto'bodily move, the conflsyor sand ,cutterzarmsjlto perform the de- -scri'bedoperations;'. rj, A Y 7.

67 In a coal miningfmachine',thecombinal'ziorii-of a conveyor, a main elongated cutter --arm prdjectinghorizontally in fixed relation itoisaid-conveyor, an: endless cutter chain on 1 said arm adapteditocut'a paththereforin' ia1eoalrface.and=.to; move :loose material toward said conveyor when the conveyor and cutter farmare. moved toiadvance the latter laterally, an auxiliary cutter arm :movable with: the -rnain cutter: arm and inthe same direction, said auxiliary "cutter-arm having :a cutter -:chain: adapted tocooperate withith'e: chain of the maincutter arm ingino'ving 'loosematei-rial toward Ethe Conveyor, said auxiliary Jcu ter-arm' being inactiveqduring, the cutting gmovement of: said main cutter arm, the direction of movement of said maincutter armbejing the-same in boththe cutting and gathering operations, and .means to bodily move the gconveyor andfcutter armsgin a rectilinear path to perform the describedoperations. T l

; :68. 1 In a machine .of the. class described, a cutting mechanism bodily movable to form a kenfina 'coal'fac'e adj acent; the ,mine floor E'n'n also to dragont loose material, and gath- V a -ening{mechanismgbodily adjustable into position to cooperate with saidjcutting-mechani'srn in}, another; plane in the vdragging. out flpe atlen-z r 69. In a machine of the class described, a frame, cuttmg mechanism carried by said frame 1n fixed relation thereto, means to more said frame and therewith said cutting mechanism toform a kerf in a coal face adjacent the mine floor or to drag out loose material, and, gathering mechanism carried by said frame and bodily adjustable into position to cooperate with said cutting mechanism in another plane in the dragging out operation.

70. In a machine of the class described, a cutting mechanism bodily movable to form a kerf in a coal face and also to drag out loose material, and gathering mechanism swingable into substantially parallel superposed re lation to said cutting mechanismto cooperate with the latter in dragging out the loose material to a common point of delivery.

' 71. In a machine ofthe class described, a cutting mechanism bodily movable to form a kerf in a coal face and also to drag out loose material, gathering mechanism swingable into superposed relation to said cutting mechanism about a pivot point directly above the latter to cooperate with the latter in drag- :g'ing out the loose material to a common point of delivery, and means to lock said gathering mechanism in such cooperating position.

7 2. In a machine of the class described,'a

cuttingmechanism bodily movable to form a kerf in 'acoalfaceat the mine floor and also to dragout loose material, and gathering mechanism sWingable into superposed relation to said cutting mechanism to cooperate with the latter in dragging out the loose Inaterial to a'common point of delivery, and disengageable driving connections for said gathfering mechanism.

73. In a machine of the "class described, a

' frame, elongated cutting mechanism projecting from said frame in fixed relation thereto, means to movesaid'frame' and therewith said cutting mechanismto engage a lateraledge 20f the latter in :a coal face'to form akerf therein or to engage said edge 'Wltllit lnttSS of loose material to drag it out, anda gather- -'ing mechanism pivoted tosaid frameand swingable into superposed relation to said cutting mechanism to cooperate with the latter at the same'sideof theframein dragging out theloose' material to a common point of-deliveryh V 74. In a machine ofthe class described,a frame, elongated cutting mechanism projecting from said frame in fixed relation thereto, means ,to, move said frameandtherewith said SCI cutting mechanism to engage the lateral edge of the latter in a-coal face to form aikerf therein or to engage said edge with a mass of loose marina" drag it out, a gathering mechanism pivoted tosaid frame and swingable'into superposed'relation' to said cutting mechanism-to cooperate Withthe'latter at the L same-"side of theiframe sin dragging-out the loosematerial to a common pomtof delivery,

V kerftherein or to engage said edge with a mass of loose material to drag it out, and gathering mechanism carried by said frame and bodily adjustable into position to cooperate with v said cutting mechanism in another plane at the same side of the frame in dragging out the loose material to a point of delivery.

In testimony whereof I have hereunto set my hand.

NILS D. LEVIN. 

